The Application of On-Off Regulation in Public Buildings

Focusing on the phenomenon that many office buildings and student apartments in northern China with vertical single tube series heating systems are of high energy consumption and waste lots of thermal energy because of lacking heating regulation, this paper proposed a system of on-off regulation to optimize the regulation, where on-off values are installed in each vertical riser, indoor temperature controllers are installed in the room with lower temperature, and the on-off values control circulating water automatically according to the difference between the real temperature and the set temperature and finally the indoor temperatures are controlled. The temperature control effect and energy saving effect of this system were discussed in both simulation and measurement. The conclusion shows that: 1) the proposed system can optimize heating regulation and reduce the loss cause of heating non-uniformity.2) the on-off control on the flow of single vertical tube makes temperature of all rooms stringed in the riser meet the requirements.3) the indoor temperature differences in the same riser are controlled in 2 °C.4) in practical, users on-time is only 50% of total time through on-off regulation, the effect of energy saving is significant.

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Development of Advanced Train Control System in Japan and its Energy Saving Effect

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.512-515.1326 ◽

2012 ◽

Vol 512-515 ◽

pp. 1326-1332

Author(s):

Hideo Nakamura ◽

Jia Sun ◽

Sei Takahashi ◽

Masanori Yamamoto

Keyword(s):

Control System ◽

Energy Saving ◽

Energy Savings ◽

Low Cost ◽

High Energy ◽

Energy Reduction ◽

Train Control ◽

Block System ◽

Train Control System ◽

Saving Effect

Railways are an energy-efficient mode of transportation. Even so, efforts are being made to attain even further energy savings. The latest train-car model of the Shinkansen bullet train, while achieving enriched functionality and improved performance, has attained a 49% energy reduction compared with the 0-series Shinkansen train-cars that debuted at the start of Shinkansen's operation. Also, in the underlying train control system, technologies that will lead to energy reduction have been developed. In order to achieve further energy savings and higher-performance train control, we are developing a new train control system known as Automatic Train Protection and Block System (sometimes referred to ATP-Block system here). This new control system produces a high energy-saving effect compared with conventional signal systems based on ground equipment. We believe that realization of low-cost, highly functional energy-saving Railways will bring back users of automobiles and airlines to Railways, contributing to global energy saving and helping to prevent environmental destruction.

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Analysis of the Heating and Energy Saving Effect of Capillary Radiant Ceiling in Hot Summer and Cold Winter Area

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.960-961.599 ◽

2014 ◽

Vol 960-961 ◽

pp. 599-602 ◽

Cited By ~ 1

Author(s):

Qing Mei Wen ◽

Dong Yang ◽

Ming Jiu Chen ◽

Yong An Li ◽

Shi Jun Wei

Keyword(s):

Finite Element ◽

Energy Saving ◽

Composite System ◽

Heating System ◽

Radiant Heating ◽

Cold Winter ◽

Radiation Heating ◽

Indoor Temperature ◽

Saving Effect ◽

Indoor Comfort

This paper introduces the advantages of capillary roof radiant heating system, by using finite element numerical method, the indoor temperature distribution of capillary radiant roof and underfloor supply air composite system is simulated, using the theory of exergy to analysis the energy saving of the system, the result proves that the system can well satisfy indoor comfort requirements, and compared with the floor radiation heating system can saving energy 65.8%, has great research value.

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Simulation Analysis of Building Energy Consumption with Different Surface-Volume-Ratio and Envelop Performance of Rural Dwellings

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.953-954.1578 ◽

2014 ◽

Vol 953-954 ◽

pp. 1578-1583

Author(s):

Tian Yu Xiong ◽

Xiu Zhang Fu ◽

Jian Dong

Keyword(s):

Energy Consumption ◽

Energy Saving ◽

Simulation Analysis ◽

Volume Ratio ◽

National Standard ◽

Heating And Cooling ◽

Detached House ◽

The Difference ◽

Saving Effect ◽

The Impact

Rural dwellings have a big difference in the appearance and envelope. Living form is changing a lot from detached house to the apartment in multi-story apartments. These changes affect building’s energy consumption consisting of heating and cooling. This paper focuses on the impact of the energy consumption affected by different surface volume ratios, simulation analysis showed a general argument of the difference. And for the same house type, this paper also compares the energy-saving effect of different envelop performances, Specific contents are the heat transfer coefficient and shading ways. Simulation results identified that SVR has influence on different types of houses, the energy consumption of row houses can be saved more than 30% compared with detached houses. Envelope performance also affects energy consumption and the national standard is recommended for the energy saving and the comfort.

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Energy-saving Scheme of 5G Base Station Based on LSTM Neural Network

Journal of Physics Conference Series ◽

10.1088/1742-6596/2083/3/032026 ◽

2021 ◽

Vol 2083 (3) ◽

pp. 032026

Author(s):

Yuxuan Wang

Keyword(s):

Energy Consumption ◽

Energy Saving ◽

Power Saving ◽

Original Data ◽

High Energy ◽

Base Station ◽

Base Stations ◽

Idle State ◽

Single Station ◽

Saving Effect

Abstract As China’s new infrastructure,5G has received national and social attention. 5G promotes economic to grow rapidly. But, the high energy consumption caused by the massive deployment of 5G base stations cannot be ignored. The total annual power consumption is expected to reach 243 billion degrees when the 5G base station is fully built. In the tidal scene, some 5G base station in an idle state still power fully, which causes great power waste. The historical volume of base station business data is used to train LSTM model, and predict the future base station business. When the business is lower than the threshold, the base station will be closed to avoid unnecessary power waste. And the LSTM model prediction results fits the original data ideally. By implementing the power saving strategy, the energy consumption of the base station is reduced by 18.97 %. A single station can save 1174 degrees of electricity yearly. It can be seen that the energy saving effect is remarkable.

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A Summer Case Study on Applying Ventilated Double-Skin Facade to a Building in Cold Zone of China

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.608-609.1682 ◽

2012 ◽

Vol 608-609 ◽

pp. 1682-1685

Author(s):

Hua Yang ◽

Qian Zhao Wan ◽

Bin Yang ◽

Chunhua Sun ◽

Guo Qiang Xia ◽

...

Keyword(s):

High Energy ◽

Indoor Temperature ◽

Air Cavity ◽

Indoor Space ◽

Cold Zone ◽

Double Skin ◽

Lower Temperature ◽

High Energy Consumption ◽

Testing Room

It is crucial for ventilated double-skin facade (DSF) compared to single- skin facade to avoid high energy consumption, optic pollution and inadequate ventilation problems. In this paper, the performance of ventilated DSF applied to a building located in a university in cold zone (Tianjin) of China is tested. The original conditions of both outdoor and indoor within each testing room are comparatively same.The temperature behaviors of both the ventilated air cavity of DSF and indoor space with different experimental modes during summer are investigated. Additionally, the effects on indoor temperature due to the ventilated DSF with different modes in summer are also analyzed. The results shows that the ventilated DSF is a effective approach to reduce indoor temperature; the opening airflow windows of external façade of the DSF should be effective to lower temperature of both the ventilated air cavity of DSF and indoor space.

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Research of Potential Energy Recycling System on Port Tyre Cranes

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.712-715.1363 ◽

2013 ◽

Vol 712-715 ◽

pp. 1363-1367 ◽

Cited By ~ 1

Author(s):

Jing Tang ◽

Yong Hu ◽

Li Juan Su ◽

Ling Hua Hu ◽

Ji Quan Hu

Keyword(s):

Potential Energy ◽

Energy Saving ◽

Complex Structure ◽

High Energy ◽

Energy Utilization ◽

Recycling System ◽

Latent Energy ◽

Saving Effect ◽

New Applications ◽

High Energy Consumption

Port tyre cranes have the drawbacks of high energy consumption and serious pollution, whose potential is the most important latent energy being wasted. Some attempts to recycle the potential of tyre crane have attained certain energy-saving result, but their stability and reliability need to be verified. Based on the specific conditions of port tyre cranes with complex structure, a novel potential energy recycling system was proposed, with new applications such as a coaxial motor with dual armatures and variable torque and the nonlinear weighted coding dynamic magnetic technology. The results show that this system has characteristics of high energy utilization, excellent energy-saving effect and stability.

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Analysis on Energy Saving Effect of Inner Sunshade in Beijing Area

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.347-353.3024 ◽

2011 ◽

Vol 347-353 ◽

pp. 3024-3028

Author(s):

Wei Lun Wang ◽

Jing Chao Xie ◽

Wei Yang ◽

Xiao Ming Ma

Keyword(s):

Energy Saving ◽

Simulation Analysis ◽

Office Building ◽

Cooling Load ◽

Indoor Temperature ◽

Beijing Area ◽

Saving Effect

By means of researching an office building in Beijing area and making simulation analysis on the data concerning energy saving effect of building sunshade, the paper investigates the effects of different sunshade systems on indoor temperature and cooling load, and theologically selects the optimal sunshade system best suitable to Beijing area. The research shows that if a suitable inner sunshade system is applied, an energy saving effect of over 30% can reached.

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Experimental Study and Numerical Simulation on Hydrodynamic Performance of a Twisted Rudder

Marine Technology Society Journal ◽

10.4031/mtsj.49.5.7 ◽

2015 ◽

Vol 49 (5) ◽

pp. 58-69 ◽

Cited By ~ 2

Author(s):

Yu Sun ◽

Yu-min Su ◽

Hai-zhou Hu

Keyword(s):

Numerical Simulation ◽

Energy Saving ◽

Open Water ◽

Hydrodynamic Performance ◽

Surface Panel Method ◽

Thrust Coefficient ◽

Propeller Wake ◽

Pressure Distributions ◽

The Difference ◽

Saving Effect

AbstractTo analyze the energy-saving effect of a twisted rudder, this work presents the simulated and experimental results of propeller-rudder systems. In this article, a surface panel method (SPM) and computational fluid dynamics (CFD) are introduced to simulate the hydrodynamic performance of propeller-rudder systems. The thrust coefficient Kt, torque coefficient Kq, open-water efficiency η of the propeller, and thrust coefficient Kr of the rudder as a function of the advance coefficient J are obtained and plotted. The energy-saving effect of the twisted rudder is analyzed by comparing the results of numerical simulation and a cavitation tunnel experiment. The experimental energy-saving effect is 2.23% at the design advance coefficient J = 0.8. The pressure distributions of the propeller blade and rudder are plotted by two methods, and the difference of the force on an ordinary rudder and a twisted rudder is discussed. This study improved the experimental twisted rudder model. The change makes the rudder take advantage of propeller wake and improves the energy-saving effect of a twisted rudder. After improvement, the energy-saving effects obtained by the two methods are 0.448% and 0.441%. To analyze the energy-saving mechanism, this study compares the pressure distributions and efficiencies of different systems.

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